/* Basic reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    background-color: #f4f4f4;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    padding: 20px;
    width: 300px;
}

h1 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #333;
}

form {
    display: flex;
    flex-direction: column;
    margin-bottom: 20px;
}

label {
    margin-bottom: 5px;
    font-weight: bold;
    color: #555;
}

input[type="text"] {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-bottom: 15px;
    font-size: 16px;
}

button {
    background-color: #007bff;
    color: #fff;
    border: none;
    padding: 10px;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #0056b3;
}

.result {
    font-size: 18px;
    font-weight: bold;
    color: #333;
    margin-bottom: 20px;
}

.weight-guide {
    font-size: 14px;
    color: #666;
}

.weight-guide ul {
    list-style: none;
    padding: 0;
}

.weight-guide li {
    margin-bottom: 10px;
}